Monitoring method for health state of mine hoisting system based on main shaft measuring point strain
A technology of healthy state and lifting system, which is applied to lifting equipment, elevators, transportation and packaging in mines, can solve the problems of difficulty in extracting weak signal features, mixed signals with various noise signals, etc., and achieves simple structure and stress conditions. Single, real-time monitoring of accurate effects
Active Publication Date: 2018-02-02
CHINA UNIV OF MINING & TECH
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[0005] The purpose of the present invention is to provide a mine hoisting system health status monitoring method based on the strain of the main shaft measuring point, to solve the problem that the signal acquisition in the existing monitoring method is mixed with various noise signals, and it is relatively difficult to extract weak signal features
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[0024] The present invention is based on the method for monitoring the health status of the mine hoisting system based on the strain of the main shaft measuring point, and the specific steps are as follows:
[0025] (1) According to the rated load and running acceleration and deceleration of the mine hoist, the wire rope tension T on both sides of the friction wheel under each hoisting condition is calculated by Newton's second law x and T s , and then calculate the maximum static tension difference of the wire rope on both sides of the friction wheel, ΔT max =T s -T x , the strain threshold [ε] of the measuring point can be obtained from the force balance condition and the constitutive equation;
[0026] (2) Based on the historical strain data collected by the spindle torque collection system under normal working conditions, the envelope value of the historical data of each speed segment is calculated by the hilbert algorithm [ε i ] h , modify the upper and lower limits ...
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The invention discloses a monitoring method for the health state of a mine hoisting system based on main shaft measuring point strain and belongs to a monitoring method for the health state of a minehoisting system. The monitoring method for the health state of the mine hoisting system includes acquisition of a strain value of the surface of the shaft segment of a main shaft of a hoisting machineand signal processing and outputting of a health monitoring system; by monitoring a strain value of a sensitive measuring point of the main shaft in real time, monitoring on health of the running state of the mine hoisting system is achieved; a strain signal acquired by a strain acquiring device on the main shaft of the hoisting machine is transmitted to an upper computer by a wireless emitting device and a wireless receiving device; a health state detecting system of the upper computer processes the strain signal through an algorithm and performs interface outputting; and a strain acquiringdevice comprises a strain sensor and an acquitting unit which share a same power source, the strain sensor is installed on the surface of the selected shaft segment of the main shaft in a surface mounted device manner, and the acquiring unit is correspondingly fixed to the same shaft segment of a surface mounted device. The monitoring method for the health state of the mine hoisting system based on the main shaft measuring point strain has the beneficial effect that real-time monitoring of the running state of the hoisting system is more accurate and credible.
Description
technical field [0001] The invention relates to a method for monitoring the health state of a mine hoisting system, in particular to a method for monitoring the health state of a mine hoisting system based on the strain of a main shaft measuring point. Background technique [0002] The mine hoisting system lifts coal and gangue along the shaft, lifts personnel and equipment, and is the link connecting the underground production system of the mine and the ground industrial square. The mine hoist is a key component of the mine hoisting system and plays an important role in the entire mine production. [0003] The "Coal Mine Safety Regulations" and "Coal Mine Electromechanical Equipment Integrity Standards" have made clear regulations on the safe operation of mine hoists, requiring technical testing of regular shutdowns of mine hoists in normal production. The actual mining production also mainly relies on Traditional methods of regular and post-maintenance of mine hoists. Po...
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IPC IPC(8): B66B5/00B66B19/06
CPCB66B5/0031B66B19/06
Inventor 朱真才常用根滕文想江帆陈潇曹国华沈刚李伟周公博彭玉兴
Owner CHINA UNIV OF MINING & TECH
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